Gingivitis is mainly caused by topical medications, such as local tincture of iodine, iodine glycerin or minocycline hydrochloride ointment applied locally to the gums for local anti-inflammation, and systemic oral antibiotics are usually not recommended for gingivitis. Gingivitis is mainly caused by the presence of many infectious substances around the gums, such as plaque, food debris, soft tartar and tartar, which cause the gums to become red and swollen and bleed easily. The clinical treatment for periodontitis is to remove all of these infected substances completely, which is to do ultrasonic cleaning treatment, using ultrasonic cleaning method, can remove all of the tartar and plaque, creating a good environment for the gums to live in, thus restoring gingivitis to health.